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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB3 1.3 Map 4 & Map 5 w/91 octane stock



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      06-15-2009, 12:31 AM   #1
pkc415
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JB3 1.3 Map 4 & Map 5 w/91 octane stock

Hi, just wondering if anyone with JB3 1.3 is running on map 4 or 5 with no mods on 91 octane. If so, do you feel a difference than in map3? Any problems?
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      06-15-2009, 10:42 AM   #2
5soko
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you can run it but i would not advise it very much. Stick with map 2/3 with your setup.
You can give 4/5 a shot, if the temps around your area is under 80*F, and you dont go to high elevations.
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      06-15-2009, 04:27 PM   #3
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I played around with both maps 3 and 5. I am stock on 91 octane with a DCI only. Although map 5 will have a bit more boost, I found map 3 to be more consistent. The higher maps require more octane or you will run in to knock retard. In some cases the knock retard will actually cause you to loose power.

Fo consistent power all the time I recommend map 2 and 3 on 91 octane. Maps 4 and 5 might give you more power but its not consistent in my opinion.
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      06-15-2009, 04:42 PM   #4
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Quote:
Originally Posted by cali_guy View Post
I played around with both maps 3 and 5. I am stock on 91 octane with a DCI only. Although map 5 will have a bit more boost, I found map 3 to be more consistent. The higher maps require more octane or you will run in to knock retard. In some cases the knock retard will actually cause you to loose power.

Fo consistent power all the time I recommend map 2 and 3 on 91 octane. Maps 4 and 5 might give you more power but its not consistent in my opinion.
+1 My sentiments exactly.
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      06-15-2009, 08:21 PM   #5
roozie2001
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i feel bad for 91 octane guys, us 93 octane guys can do almost any map and be ok, but you guys are so limited
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      06-15-2009, 08:38 PM   #6
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im on 1.3 map 7 with dci, 93 oct.....runs smooth as a babies ass
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      06-15-2009, 08:47 PM   #7
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im on 1.3 map 7 with dci, 93 oct.....runs smooth as a babies ass
and the power is isnt it??
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